What Is NVIDIA Blackwell?

Blackwell is the NVIDIA data-center architecture that followed Hopper.

Its defining engineering choice is packaging two reticle-limited dies so they behave as a single GPU, connected by a very high bandwidth die-to-die link. It also adds support for lower precision numeric formats that increase inference throughput, and it is paired with a new generation of interconnect.

The more important shift is commercial: Blackwell is sold and deployed primarily as rack-scale systems in which dozens of GPUs share a coherent high-bandwidth domain. That moves the unit of purchase from the card to the rack, and pushes liquid cooling from optional to expected.